Date: Fri, 10 Dec 2004 11:50:41 +0900 From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp> To: "Konstantin KABASSANOV" <Konstantin.Kabassanov@lip6.fr> Cc: net@freebsd.org Subject: Re: the correct ipv6 behavior for interfaces with gif tunnel on them Message-ID: <y7v1xdyhnni.wl@ocean.jinmei.org> In-Reply-To: <002601c4de18$02b64ea0$8748e384@ipv6.lip6.fr> References: <y7vu0qwgji0.wl@ocean.jinmei.org> <002601c4de18$02b64ea0$8748e384@ipv6.lip6.fr>
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>>>>> On Thu, 9 Dec 2004 18:53:37 +0100, >>>>> "Konstantin KABASSANOV" <Konstantin.Kabassanov@lip6.fr> said: >> Please provide more detailed network configuration. Are you talking >> about a router box forwarding packets onto gif and physical >> interfaces? > Well, this is a router box with 2 physical interfaces (say xl0 and rl0). > Rl0 has a gif tunnel (gif0) over it. Xl0,rl0 and gif0 announce in their > ifconfig an MTU of 1500, but 1300 bytes traffic generated from this box > and sent through the gif0 interface is fragmented by the rl0 interface to > 1280 bytes... > Please also specify the OS name (which I guess is >> FreeBSD) and its version. > FreeBSD 4.7 (yes it is a little bit old, but I think the problem still > persist in more recent versions)... And that's why I'm asking if this > behavior is normal or not... This is not the intended behavior, and seems to be fixed at least on FreeBSD 5.3. I don't know whether the change is merged into 4.x. At least it's not the case with FreeBSD 4.10. JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. jinmei@isl.rdc.toshiba.co.jp
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